Hi everybody,

at a customer infrastructure with Exchange 2013 and Lync 2013 we got some crazy Messages after we migrated from Exchange 2010 to Exchange 2013. Some users are UM enabled and they created call answering rules in OWA2010. If they want to edit These rules, there is a error message like the following:

For CustomPeriodDays, CustomPeriodStartTime and CustomPeriodEndtime must be set valid values

Is there a way to edit or delete these Settings (set to Default)?

We cannot add new rules, because the error message blocks everything.

Kind regards,
Freddie